Poration



March 19, 1929. H] KIELBEIQG 1,705,620

STOVEPIPE STRUCTURE Filed Sept. 29. 1928 Patented Mar. 19, 1929.

UNITED STATES PATENT;o aries}fgj HENRY KIELBERG, 0F MARTIN'S PORATION,or WHEELING, wnsr VIRGINIA, A CORPORATION or DELAWAR STOVEPIPE srnucrunnA Application. 7 filed September This invention relates broadly tostovepipe structures, and more specifically to attaching means forthemeeting edges of Stovepipe sections.

The primary object of the invention is to provide a Stovepipe sectionhaving its meeting edges shaped for intcrengagement and provided withmeans whereby, when interengaged, said edges are effectually securedagainst chance disengagement.

A further object is to provide a Stovepipe section of the charactermentioned wherein the meeting edges carry lugs adapted to co-' operatefor securing said edges in place and wherein the operations ofinterengaging and disengaging said lugs are readily effected by hand.

A still further object is to provide, in a structure of the charactermentioned, lugs having forms which assure their assuming positiveinterengagement when disposed in their operative positions. 1

In describing the invention in detail, ref erence is herein had to theaccompanying drawings, in which- Figurel is a perspective view ofasection of stovepipe embodying the invention, the edges belng shown inunattached relation;

Figure 2 is a similar View showing the section twisted into position forintroducing the lugs of one edge past those of theother, as in theattaching operation;

Figure 3 is a view similar to Fig; 1, showing the edges occupyingattached relation,

Figure 4Iisan enlarged detail View of a fragmentary portion of theStovepipe section; and- Figures 5 and 6-are enlarged sectionson lines5-5 and 6-6, respectively, of Fig. 3.

Referring to said drawings,'l designates the body of a section ofstovepipe formed of light-gauge sheet metal, in whichone of thelongitudinal edge portions is first turned outward and back upon itselfto form a member 2 of narrow width which closely overlies the adjacentportion of the metal body 1, and is thence returned parallel to and at aspaced distance from said member 2, forming a second member 3 Thus,there is provided between the members 2 and 3 an open longitudinallyextending channel or pocket 4 adapted for the reception oftheoppositelongitudinal edge portion.

The member 3 has formed thereon 2e, laesfse'r al No, 309,365.

throughout'its length a plurality ofshort tonguedike projections jwhichare turned baclg'toi'lie' more or less closelyagainstiits inner surface,forming lugs 5, said lugs 00- cupying spaced relation. 7

The opposite longitudinal edge of the pipe bodyl has formed thereon aplurality of tongue-like projections which are turned backto lie againstthe outer surface ,of said body, forming lugs 6. Saidlugs 6, spacedrelatively to correspond with the spacing of FERRY, oIIIo;ASSIGNOR'TO"WHEELING; STEEL- con the lugs 5, are disposed directlyopposite the. I

last mentioned-lugs. I a 1 Each of the lugs 6 has. formed therein aseries of corrugations of a height substantially equal to the width ofthe channel or pocket 4, as shown at 7, and thus presents to theopposite lug 5 such a substantial thickness of abutment, as is bestshown-in Figs.

5 and 6, that positive interengagement bethe lugs 6 laterally withrespect securing the meeting edges in attached relation. v the presentinvention the'lugs 5 and 6have It 'will benoted, however, that in theiredges disposed in relatively seated re- I lation and that each lug 6,having the corrugated formation disclosed, provides an abutment of suchsubstantial thickness, as compared with the corresponding dimension ofthe pocket 4, that positive interengagement is had with the terminaledge of vthe adjacent lug 5.

What is claimed is v I 1. In a Stovepipe section of the characterdescribed, having one ofits edge portions bent to form an openlongitudinally extendpocket for the reception of the opposite mg edge,tongue-like lugs formed on the outer pocket-forming member and occupyingunderlying relation to the latter, and corrugated tongue-like lugsformed on and occupying overlying seated relation to the op- I adaptedto abut the ings of the other edge for securing said edgesiin attachedrelation.

' 2. In a Stovepipe section having one of its edge portions shaped toform :a longitudinal pocket, rearwardly turned lugs formed, on said edgeportion and located internally of said pocket, and rearwardly directedlugs formed on and occupying seated relation to the exterior surfaceofthe oppositeedge'portion of said section, the last mentioned lugsbeing provided with corrugations o fa' height substantiallycorresponding to-the Width of said pocket, the lugs of one edge beingadapted to abut those of the other for securing sa'id edges in attachedrelation. 1

'In'astovepipe section having-edges of slip-joint type,

oneof said edges having therein a pocket for the-reception of the otheredge, rearwardly directed'lugscarried by one edge interiorly of saidpocket, and rearwardlyi directed lugs carried by the other edge andadapted to be received in said pocketin abutting relation to the firstmentioned lugs,

being corrugated.

j In testimony whereof, I afiix'mysignature. HENRY KI-ELHERG.

the lugs of one of said edges 2

